For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eminguez:stalld/openSUSE_Tumbleweed/home:eminguez:stalld.repo
zypper refresh
zypper install stalld
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eminguez:stalld/openSUSE_Factory/home:eminguez:stalld.repo
zypper refresh
zypper install stalld
For 16.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eminguez:stalld/16.0/home:eminguez:stalld.repo
zypper refresh
zypper install stalld
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eminguez:stalld/15.6/home:eminguez:stalld.repo
zypper refresh
zypper install stalld